Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete
Incorporation of coal gangue in the concrete mixes can realize utilization of the solid waste and reduce extraction/use of natural aggregates. To improve the mechanical properties of coal gangue concrete, this paper studies use of steel fibre together with coal gangue coarse aggregate, coal gangue f...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-07-01
|
| Series: | Frontiers in Materials |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2023.1211129/full |
| _version_ | 1797773557495758848 |
|---|---|
| author | Jiuyang Li Li Chen Jingwei Luo Wenzhong Zhu Xinmei Fan Yuepeng Zhu Zicheng Zhang |
| author_facet | Jiuyang Li Li Chen Jingwei Luo Wenzhong Zhu Xinmei Fan Yuepeng Zhu Zicheng Zhang |
| author_sort | Jiuyang Li |
| collection | DOAJ |
| description | Incorporation of coal gangue in the concrete mixes can realize utilization of the solid waste and reduce extraction/use of natural aggregates. To improve the mechanical properties of coal gangue concrete, this paper studies use of steel fibre together with coal gangue coarse aggregate, coal gangue fine aggregate/sand in various concrete mixes. The effect of volume dosages of steel fibre and different levels of replacing nature coarse aggregate and river sand with coal gangue aggregates on concrete compressive strength was first investigated. Then, a design of experiment using orthogonal test was adopted to study concrete mixes with 3 factors, namely, coal gangue coarse aggregate, coal gangue sand and steel fibre, and each at 3 levels. Through multidimensional statistical data analysis of the test results, the primary and secondary factors and the optimal composition of the steel fibre reinforced coal gangue concrete were identified, and a grey prediction model for compressive strength of the concrete mixes established. The microstructural characteristics and failure mechanism of steel fiber reinforced coal gangue concrete was also studied and discussed. |
| first_indexed | 2024-03-12T22:08:12Z |
| format | Article |
| id | doaj.art-951b09e85fd745d091b8a260619351a1 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-03-12T22:08:12Z |
| publishDate | 2023-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-951b09e85fd745d091b8a260619351a12023-07-24T09:54:31ZengFrontiers Media S.A.Frontiers in Materials2296-80162023-07-011010.3389/fmats.2023.12111291211129Mechanical properties and microscopic characteristics of steel fiber coal gangue concreteJiuyang Li0Li Chen1Jingwei Luo2Wenzhong Zhu3Xinmei Fan4Yuepeng Zhu5Zicheng Zhang6School of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaSchool of Computing, Engineering and Physical Sciences, University of the West of Scotland, Scotland, United KingdomSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaChina Construction First Group the Fifth Construction Co., Ltd., Shenzhen, ChinaIncorporation of coal gangue in the concrete mixes can realize utilization of the solid waste and reduce extraction/use of natural aggregates. To improve the mechanical properties of coal gangue concrete, this paper studies use of steel fibre together with coal gangue coarse aggregate, coal gangue fine aggregate/sand in various concrete mixes. The effect of volume dosages of steel fibre and different levels of replacing nature coarse aggregate and river sand with coal gangue aggregates on concrete compressive strength was first investigated. Then, a design of experiment using orthogonal test was adopted to study concrete mixes with 3 factors, namely, coal gangue coarse aggregate, coal gangue sand and steel fibre, and each at 3 levels. Through multidimensional statistical data analysis of the test results, the primary and secondary factors and the optimal composition of the steel fibre reinforced coal gangue concrete were identified, and a grey prediction model for compressive strength of the concrete mixes established. The microstructural characteristics and failure mechanism of steel fiber reinforced coal gangue concrete was also studied and discussed.https://www.frontiersin.org/articles/10.3389/fmats.2023.1211129/fullsteel fibercoal ganguecompressive strengthorthogonal testmicroscopic mechanismgrey prediction model |
| spellingShingle | Jiuyang Li Li Chen Jingwei Luo Wenzhong Zhu Xinmei Fan Yuepeng Zhu Zicheng Zhang Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete Frontiers in Materials steel fiber coal gangue compressive strength orthogonal test microscopic mechanism grey prediction model |
| title | Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| title_full | Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| title_fullStr | Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| title_full_unstemmed | Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| title_short | Mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| title_sort | mechanical properties and microscopic characteristics of steel fiber coal gangue concrete |
| topic | steel fiber coal gangue compressive strength orthogonal test microscopic mechanism grey prediction model |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2023.1211129/full |
| work_keys_str_mv | AT jiuyangli mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT lichen mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT jingweiluo mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT wenzhongzhu mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT xinmeifan mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT yuepengzhu mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete AT zichengzhang mechanicalpropertiesandmicroscopiccharacteristicsofsteelfibercoalgangueconcrete |